Fuel-mixing device



Nov. 24, 1925.

s. B. HOLMES FUEL MIXING DEVICE Filed July 27, 1922 anoewtoz 57'I4NAEY5HOLM4'5 @351 E6 Mom W1 Patented Nov. 24, 1925.

UNITED STATES PATENT OFFICE.

STANLEY B. HOLMES, F SEATTLE, WASHIFI'GTON.

FUEL-MIXING DEVICE.

Application filed July 27, 1922. Serial No. 577,896.

-To all whom it may concern:

Be it known that I, STANLEY B. HOLMES, a citizen of the United States, and a resident of Seattle, county of King, and State of Washington, have invented certain new and useful Improvements in Fuel-Mixing Devices, of which the following is a specification. 1 v

- This invention relates to improvements in fuel mixing devices for use in connection with internal combustion engines, and has for its principal object to provide means .for supplying moisture or moistened air to the ex losive mixture as it is delivered through t e intake manifold to the engines cylinders. V c v A further object of the invention resides in the provision of a device of the above character that'may be applied between the carbureter and end of the intake manifold and whichhas a valve controlled supply tube connection with the radiator of the vehicle through which the moisture is drawn by suct1on produced by operation of the pistons within the cylinders.

A still further object of the invention resides in the details of construction of the device whereby a Venturi tube efiectis'ac- "com lished which causes a better mixing of t e moisture and fuel heretofore been possible. 7

In accomplishm these and other objects of the invention,

roved details of construction, the preferred orms of which are illustrated in the acgases than has companying drawings, wherein- Figure 1 is a side view of an internal combustion engine equipped with a fuel mixin attachment constructed and applied accor ing to the presentv invention.

Figure 2 is an enlarged, sectional view through the device and the adjacent arts of the carbureter and'fuel inlet mamfold between which it is applied.

- Figure 3 is a sectional line 3-3 in Figure 2.

Figure 4 is a horizontal section taken on the line 4-4 in Figure 2; a part of the mixing device being broken away for better view taken on the illustration.

Referring more in detail to the several views of the drawings, whereinel ike referonce-numerals designate the same-or like parts- 1 1 designates what may be an internal "combustion engine of any of the ordinary flange 5 between which a fuel mixin which may extend to a have provided the im through the 3 ends of the same and the flanges 4 and 5.

The fuel mixing device consists of a metall1c block 8 provided with a central opening 9 wherein a ring 10 is tightly fitted. Th1s rmg has an annular interior channel 11 provided at one side, as shown in Figure 4, with an opening 12 which registers with a bore, 13 leading from one side of the block and into which a valve casing 14 is threaded. The casing is con nected by means of a small tube 15 with the top of the engines radiator 16 wherein vwater 1s malntained for cooling purposes and which, at most times, is steaming or 1n a heated condition. The casing is equipped with a rotatable valve whereby i the amount of flow of water is controlled and this has connected thereto a rod 17 lace where it is readily accessible to the river of the 'vehicle. v

The opening through the ring 10 is of lesser d1ameter than the interior of the manifold and this isaccomplishedby sloping the walls, from the, upper and lower edges, inwardly, giving the ring a Venturi tube effect .as is'clearly shown in Figures 2 and 3.- In the upwardly facing wall, and located close to the opening, are up-" wardly directed apertures 20 through which the water, steam, or moistened air may be drawn by suction created within the manifold. a

With the fuel mixing device so constructed and assembled with the parts of the engine, as is illustrated, and with the fuel supply tube connected with the u er ortion of the radiator of the engiiib, ili'is readily apparent that, upon operation of the enginathere will be vacuum. pressure create cause the 'carbureted fuel to be drawn into the manifold from the carburetor. Also,"

this suction will cause the vapor to be drawn into the manifold through the aperwithin the inlet manifold which will 1 tures provided in the ring 10 and this vapor In instances when the engine has not been runnin a sufiieient time to heat up the water within the radiator, the ring 10 will be filled with water and this will be drawn into the manifold in the form of vapor. After the engine has been. running a sufiicient length of time to heat the radiator, steam will be produced which*will be taken into the manifold in this form. In some instances, only moistened air may be intakenl It is further apparent that the Venturi tube efi'ect produced by the ring will cause a compression of the fuel vapor as it passes through, the opening and then a rapid expansion. 'This causes a downward swirling, as is illustrated by the arrows in Figure 3, just above the ring which causes a re-mixing of the fuel vapor and themoisture and thereby a better mixture is produced than otherwise is possible. p Having 'thus described my invention, what I claim as new therein and desire to secure by Letters-Patent, isi

A fuel mixing device adapted to be interposed in the piping between a carburetor an point of combustion of an internal combustion engine com rising a casing having a Venturi passage t erethrough and an annular channel about the passage, means for conducting air and water va or into the said channel and a pluralit 0 small openings in the casing leading mm the channel and opening upwardly into the Venturi passage beyon its most restricted part and in the direction of flow of the fuel through the device.

Signed at Seattle, Washington this 21st l day ofJuly 1922.

STANLEY B. HOLMES. 

